Criterion Barrels .308 M118 18" Hybrid Profile Rifle Length Chrome Lined

Manufactured by Criterion Barrels Inc.
SKU: 10180-HYR
MPN: 10180-HYR
Manufactured by Criterion Barrels Inc.
2 Reviews

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Note: Criterion .308 barrels are gauged from the factory with Fulton Armory .308 AR bolts.

The .308 barrels designed by Criterion Barrels Inc. are designed to be compatible with a variety of rifle patterns such as DPMS, Remington, Bushmaster, and ADM. Not only are the hybrid profile barrels compatible with the popular receiver styles, they feature a M118 LR match grade chamber which allows the use of both 7.62x51 NATO and .308 Win. Ammunition. This AR-10 barrel is machined from 4150 Chrome Moly steel with a parkerized finish. The bore is chrome lined and hand lapped to achieve extreme accuracy and durability. The Hybrid profile combines the accuracy benefits of a heavy barrel but tapers towards the muzzle to reduce weight. This 18” .308 AR barrel is button rifled with a 1:10 twist rate and has a rifle length gas system. Build your dream AR-10 with the Criterion .308 barrel.

  • 18” barrel with M118 LR chamber
  • Hybrid barrel contour
  • 1:10 button rifled twist
  • Hand lapped
  • Rifle length gas system with .750” diameter
  • Dimpled beneath the gas port

The rifle length gas system on this barrel has a .750” gas block diameter and features a dimple beneath the gas port for installing a set screw style gas block. This simple addition helps to lock the gas block down and ensures it won’t move while shooting. Criterion designs their gas system lengths to accommodate DPMS standard AR-15 gas tubes. This Criterion Hybrid barrel is built to withstand years of heavy use while providing exceptional accuracy.

Criterion Barrels are known for building high quality, precision AR-15 and AR-10 barrels as well as barrels for older firearms like the M1 Garand, M14, and Lee Enfield. Their barrels are used by the US Army Marksmanship Unit Action Shooting Team and the US Marine Corps Combat Shooting Team and are proven to win matches time and time again.
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Barrel CoatingParkerized
Barrel ContourHybrid
Barrel Length18
Barrel LiningChrome
Barrel Material4150 Chrome Moly Steel
BrandCriterion Barrels Inc.
Caliber Gauge.308 Win
Feed RampsM4
Gas Seat Diameter.750
Gas System LengthRifle
Thread Pattern5/8 X 24
Twist Rate1:10
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

2 reviews

  • 3 stars
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  • 2 stars
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  • 1 star
  • 0 reviews

Criterion is GREAT!!


Excellent barrel. I have numerous barrels from Criterion and they are all great. 5 shot sub moa with numerous weight and brands is the norm, and 1/2 moa with several match loads. Customer service at Criterion is awesom as well.

Beautiful with some bumps

by -

The barrel is extremely well made and locks up tight to an Odin Works bolt. Unfortunately, mine is under gassed for my setup. The good news if Criterion is extremely responsive and it'll already on it's way back for tuning. Hopefully, I'll be upgrading this review to 5 stars once I print some groups!